Unfortunately we had some limitations. We did not want to go out and buy a huffy slider because it was too much money and the fun is always in the build. As we began to look around for instructions all of the trikes we saw needed to use a welder which we do not have access to. So I set out to design the cheapest trike I could while using no welding and still making it function perfectly and look good.
Step 1: Find a Bike and Chop It
Step 2: Grinding and Cleaning Up The Cuts
Step 3: Rear Axle Assembly
UPDATE: The 3/4" aluminum bar worked fine for me at 170 pounds but anything over that i would recommend using 1".